Change SORRMv3 ocean initial condition

[darincomeau]

Changes ocean initial condition for B-cases with the SOwISC12to30E3r3 ocean mesh. The previous default initial condition is from a one-month G-case restart from cold-start (standard default). The initial condition here has been interpolated from year 701 of the SORRM v2.1 1950 control simulation, in an effort to bypass/speed-up ocean spinup.

New ocean initial condition file is staged in public inputdata repo, world-readable.

[BFB] except
[non-BFB] for B-cases with the SOwISC12to30E3r3 ocean mesh (not in current testing).

[darincomeau]

Here are results from 30 year B-cases:

Baseline with previous ocean initial condition:
https://web.lcrc.anl.gov/public/e3sm/diagnostic_output/ac.dcomeau/E3SMv3_dev/20240923.v3.SORRME3r3.piControl.lndIC.chrysalis/mpas_analysis/ts_0001-0030_climo_0021-0030/

Run with this ocean initial condition:
https://web.lcrc.anl.gov/public/e3sm/diagnostic_output/ac.dcomeau/E3SMv3_dev/20241030.v3.SORRME3r3.piControl.interpOcnIC.chrysalis/mpas_analysis/ts_0001-0030_climo_0021-0030/

Model vs. Model comparison:
https://web.lcrc.anl.gov/public/e3sm/diagnostic_output/ac.dcomeau/E3SMv3_dev/20241030.v3.SORRME3r3.piControl.interpOcnIC.chrysalis/mpas_analysis/vs-cold-start/yrs21-30/

Time series of OHC anomaly, which shows smaller magnitude/drift with this ocean IC (black) vs. previous ocean IC (red):

[proteanplanet]

I'd like to request @maltrud document on this PR, however briefly, the method used to obtain these results, so that we have that information clustered with this application.

[maltrud]

will do ASAP